S9407-AB-HBK-010 Datasheet, PDF (50/276 Pages) Glenair, Inc. – HANDBOOK OF SHIPBOARD ELECTROMAGNETIC SHIELDING PRACTICES

S9407-AB-HBK-010, Rev. 2
performance. The Navy reserves the right to require that sample fittings be made available for testing
in all sizes the manufacturer wishes to have approved. No indebtedness between the U.S.
Government and any manufacturer will be incurred in connection with these qualification tests. Test
samples and drawings shall be shipped prepaid by the manufacturer and will not be returned.
4.8.2 Application for Qualification
Manufacturers shall submit to NUWC, EMC Branch, Code 3431, Newport, RI 02841-1708 a
sample 3/4-inch size GR2000-series transition-fitting installed on a 1-foot length of conduit (identified
by manufacturers name and part number). In addition, drawings showing construction details of all
sizes of the GR2000 transition-fittings shall be submitted. The drawings shall be numbered and dated
for reference purposes.
4.9 DEVIATIONS
Deviations from paragraphs 4.5, 4.6, and 4.11 will be considered if shielding performance can
be met by modifications of material, finishes, or mechanical design, provided that the form, fit, and
function requirements of this specification are met. Samples of such mechanical fittings must be
submitted to the Naval Undersea Warfare Center, EMC Branch, Code 3431, Newport, RI 02841-1708
for test and approval. Complete details of all parameters affected by the modification must
accompany the sample.
4.10 SOURCES
The GR2120, GR2123, GR2124, and GR2125 transition fittings must be obtained only from
the qualified sources listed in the Qualified Products List, appendix C. The other GR2000 Series
fittings may be obtained from any source which manufactures them in accordance with this
specification.
4.11 QUALITY ASSURANCE
It will be the responsibility of the procuring activity to determine the acceptability of a transition
fitting.
4.12 TRANSITION AND ACCESSORY FITTINGS
Table 4-1 lists the transition and accessory fittings used with flexible metal conduit.
4.12.1 Data Sheets
The following data sheets (figures 4-1 through 4-12) form a part of this specification. They
include assembly drawings, tables of appropriate data, and part-number development information.
4.13
ASSEMBLY INSTRUCTIONS, CONDUIT TO GR2125 FITTING
The instructions shown in figure 4-13 describe the procedure for terminating flexible metal
conduit used for shielding a coaxial cable connected to a triaxial connector. The GR2125 fitting
provides the transition between the conduit and the connector. (Dimensions in figure 4-13 are in
inches.)
4-5